Product Description
CMT 690.051 Profile Knives for Insert Shaper System are a matched pair of alloyed steel shaper knives sized 1-37/64 in. x 5/32 in. (40x4mm), designed for use with CMT universal cutter heads in the insert shaper system. These knives deliver consistent profile results in molding, edge profiling, and cabinet door work, making them a practical choice for woodworkers and shop professionals who demand repeatable accuracy across a variety of wood species and engineered panels.
Key Features
- Alloyed steel construction - provides long-lasting performance and maintains edge integrity through extended production runs on hardwood, softwood, MDF, and chipboard.
- 40x4mm knife size (1-37/64 in. x 5/32 in.) - precise dimensional sizing ensures a secure, consistent fit in compatible universal cutter heads, reducing setup variation and improving profile repeatability.
- Sold as a matched pair (2 knives) - both knives are balanced and profiled together, so you get a ready-to-run set without sourcing individual replacement knives separately.
- Designed for the CMT universal cutter head insert shaper system - compatible with a variety of profile knives across the system, making it straightforward to swap profiles and expand your shaping capability without changing cutter heads.
- Profile number 051 specific geometry - delivers a defined, repeatable molding profile suited to frame and panel work, edge profiling, and cabinet door making with minimal hand finishing required.
Why This Product
- Woodworkers running production molding or cabinet door profiles benefit from a knife system that swaps quickly into a universal cutter head - the 690.051 pair slots into the insert shaper system so you can change profiles without replacing the entire head.
- The alloyed steel material supports long-lasting cutting performance on both solid wood and engineered panels like MDF and chipboard, reducing the frequency of knife changes during production work.
- Buying knives in a matched pair means both cutters share the same profile grind, which keeps the cut balanced and reduces tear-out or chatter on the workpiece surface.
- The 40x4mm format is a widely accepted standard in the insert shaper system, meaning these knives work with a range of compatible universal cutter heads - giving you flexibility across different machine setups.
Specifications
- Manufacturer Part Number: 690.051
- Brand: CMT Orange Tools
- Cutting Height: 1-37/64 in.
- Maximum Thickness: 5/32 in.
- Knife Size: 40x4mm (1-37/64 in. x 5/32 in.)
- Material: Alloyed Steel (SP)
- Quantity: 2 knives (sold as a pair)
- Profile Number: 051
- System Compatibility: CMT Insert Shaper System - Universal Cutter Heads
Approved Applications
- Molding and profiling on hardwood and softwood
- Cabinet door making
- Edge profiling
- Frame and panel work
- Shaping MDF and chipboard panels
Frequently Asked Questions
How many knives are included in the CMT 690.051 package?
The 690.051 is sold as a pair, meaning you receive 2 profile knives per package. Both knives share the same profile grind and are intended to be used together in a compatible universal cutter head.
What cutter heads are these knives compatible with?
The 690.051 knives are designed for the CMT insert shaper system and are compatible with universal cutter heads that accept 40mm x 4mm profile knives. This includes a variety of universal cutter heads in the CMT insert shaper lineup.
What materials can the 690.051 profile knives cut?
These alloyed steel knives are suited for use on hardwood, softwood, MDF, and chipboard - covering most common solid wood and engineered panel materials used in cabinetry, millwork, and general woodworking.
Can these knives be used on a spindle moulder or profile and edging machine?
Yes. The 690.051 profile knives are appropriate for use on spindle moulders, moulders, and profile and edging machines, provided the machine accepts a universal cutter head that accommodates 40x4mm insert knives.
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